Sewing-machine



(No Model.)

J. C. WOOD.

SEWING MACHINE.

No. 320,033. Patented June 16, 1885.

" 'lzzzawmmuu %w M m 9% llrrnn STATES PATENT Erica.

JOHN C. WOOD, OF TABLE BOOK, NEBRASKA.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 320,033, dated June 16, 1885.

Application filed March 31, 1885.

To aZZ whom it may concern:

Be it known that 1, JOHN G. XVOOD, a eitizen of the United States, residing at Table Rock, in the county of Pawnee and State of Nebraska, have invented a new and useful Improvement in Sewing-Machines, of which the following is a specification.

My invention is a device in which I use cone like pulleys for the belt, combined with hinged-fender attachment for moving the belt.

The object of my invention is to increase and decrease the rapidity of the needle while in motion, varying from one to three strokes of the needle, without increasing and de creasing the motion of the treadle or what ever power is applied. This I accomplish by using cone-like pulleys for the belt, the small pulley decreasing in diameter while the large pulley correspondingly increases in dimeter, so that the same length belt works equally well at any point on the pulleys, and by pressing the knee against the fender, which is hinged to the legs of the machine just be low the large pulley, the belt, by its running between guides which form part of and are at the upper end of the fender, is moved toward the large edge of the large pulley and the small end of the small pulley, which increases the rapidity of the needle while in motion to three times its former motion without increasing the rapidity of the treadle, and, by a wire (No model.)

spring that surroundsthebolt that goes through the upper end ofthe fender and attaches it to theleg of the machine,the belt is moved back and kept at its former place on pulleys.

Figure 1 shows my invention eomplete,from a side View of the machine. Fig. 2 represents the fender as seen at a right angle from its position as shown in Fig. 1.

In the drawings similar letters refer to similar partsin the different views.

A represents the large pulley; B, the small pulley; O, the fender at the slowest motion of the needle.

The dotted line Drepresents the position of the fender at the fastest motion of the needle; E, the bolt with wire spring; F, the belt at the slowest motion of the needle; G, the dotted line, the place of the belt at the fastest motion of the needle; a a, the guides that move the belt.

\Vhat I claim, and desire to secure by Let ters Patent, is

In changing speed of sewing-machines while in operation without changing the rapidity of the treadle motion, the combination of the cone pulleys carrying the belt with the hinged fender, as substantially shown and described.

JOHN G. XVOOD.

Vitnesses:

W. M. Forums, 0. L. \VEMPLE. 

